What is the area covered by a sound if the intensity is 1230 W/m2 with a power of 560 W?

To create electromagnetic induction, which of the following has to move? a. a wire b. a magnet c. a transformer d. either a or b

During which interval are the persons represented by the graph not moving? a) 0 to 0.5 hrs b) 1.5 to 2 hrs c) 2 to 2.5 hrs d) 4.5 to 5 hrs

You can melt ice by applying pressure because the solid/liquid line has a slope.